Figure 2.

Classification of Helitrons in D. pulex based on structural features and conserved coding region. Alignment of (a) Helitron termini showing conservation across species, including HelidaphNA1.1 and HelidaphNA2.1, (b) the rolling-circle Rep domain showing conservation across species, including D. pulex, and (c) 5' and 3' ends of HelidaphNA1.1 copies found in tandem arrays in the genome.